2015 F3 with metallic noise in front end - any ideas?

[hearneco]

Hello all. Got a noise like a metal rubbing noise in front end. Replaced brakes & rotors plus checked belt/front pulley. Pulley replaced by dealer two years ago with belt. Noise not coming from either. It starts from 30 mph to 40mph when you back off throttle to cruise. Mostly when backing off throttle. 2015 F3 Spyder and never heard this noise before. Oil just been changed & level is good. Does anyone have any ideas what this is??

Bill

[SpyderF3-s]

That is the typical sound when the front sprocket is going out. Check for red dust.

[hearneco]

No red dust. Ran it with sprocket cover off & no noise.